The best replacement for gsm is cdma.

The best alternatives to gsm are rated as following:
★★★★★  cdma
★★★  3g
★★  wcdma
★★  gprs
★★  lte
★★  umts
★  edge
★  tdma
★  cdma iphone
★  global
★  cdma technology
★  cdma in india
★  cdma carriers
★  cdma iphone 4
  cdma iphone 5
  cdma phones
  cdma which is better
  global iphone 5s
  thread count
  cdma wiki
  gsm 2012
  lgbt
  cdma 5s
  hspa
  cdma coverage
  cdma cell phones
  speex
  pcs
  cdma straight talk
  sim
  cdma ipad
  cdma comparison
  wimax
  g/m2
  cdma tracfone
  cdma cell phone
  cdma better
  g729
  cdma mobiles
  cdma iphone 4s
  cdma difference
  g3
  3g network
  iden
  cdma cellular
  gps
  cdma networks
  cdma ppt
  gsm rev a
  cdma phone
  cmda
  asw
  amps

Your alternative for gsm is not listed? Suggest!
Speaking about gsm, one probably shouldn't forget about 8051.

Other search terms related to gsm and their ratings are:
★★★★★ 8051
★★★★★ gps module
★★★★ cdma
★★★★ cdma mobiles
★★★ gprs
★★★ pic16f877a
★ cdma mobile
You have in mind a companion for gsm and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of gsm in all years. Click on graph for more.
gsm
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